Molar Mass Determination of Water-Soluble Light-Emitting Conjugated Polymers by Fluorescence-Based Analytical Ultracentrifugation
Autor: | Michael F. Bailey, Trevor A. Smith, Xiaotao Hao, Timothy M. Ryan |
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Rok vydání: | 2009 |
Předmět: |
chemistry.chemical_classification
Molar mass Polymers and Plastics Organic Chemistry Inorganic chemistry Fluorescence spectrometry Polymer Conjugated system Polyelectrolyte Inorganic Chemistry Absolute molar mass Analytical Ultracentrifugation chemistry Sedimentation equilibrium Polymer chemistry Materials Chemistry |
Zdroj: | Macromolecules. 42:2737-2740 |
ISSN: | 1520-5835 0024-9297 |
Popis: | Determining the molar mass of conjugated polymers has proven difficult in many situations using conventional means, and this is often exacerbated in the case of polyelectrolytes. In this paper we report on a new method of determining the molar mass of soluble, light-emitting conjugated polymers by coupling emission-based detection with analytical ultracentrifugation. This method is shown to be capable of recovering accurate molar masses with high sensitivity, without the need for standards, and can also identify aggregation behavior. |
Databáze: | OpenAIRE |
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